/Engine/Plugins/FX/Niagara/Source/NiagaraShader/Public/NiagaraShared.h
virtual void GetShaderMapId ( EShaderPlatform Platform, const [ITargetPlatform](API\Developer\TargetPlatform\Interfaces\ITargetPlatform) * TargetPlatform, [FNiagaraShaderMapId](API\Plugins\NiagaraShader\FNiagaraShaderMapId) & OutId ) const